we have spotted senator john kerry who is playing mitt romney in the mock debate sessions for the president in the las vegas area. he has been spotted in the lobby of the hotel, with reading glasses and a pile of papers, going through this like it is a final exam and researching every last bit. the president, when he delivered pizza to campaign volunteers to show he has a calm, cool image headed into the debate, he made clear he also things this is like a final exam. he has been holed up, long hours, inside, dealing with a big workload. >> it is all very nice. although they keeping me indoors all the time, that is a drag, they are making me do my homework. >>reporter: the president says he is doing his homework with 8.1 percent unemployment, the deficit, and now we have new numbers because of the start of the fiscal year, reaching $1.3 trillion although the president promised to cut the budget if half in his first term and balance it down the road. that has not happened. this is a debate about domestic issues. that will be on the agenda tomorrow night. trace? >>trace: we know nevada is a bi